clothing 2D pattern from Inkscape and simulate in Blender
In inkscape the paths need to be filled, and be a closed path.
For a filled shape in blender:
In the Curve-&gt;Shape tab make the curve 2D and set the  Fill Mode to Both (Front and Back)

If your idea is to use it as texture on a material, then you need to convert the image to a a raster format (tiff or whatever other format you are confortable with) Blender cannot use pahts as texture.
If what you want is to create a shape and fold it or wrap it around objects, then SVGs will need to be converted to meshes.